Eukaryotic
A cell that contains a nucleus and membrane-bound organelles is
Heterotrophic
Organisms that must obtain nutrients and energy by eating other organisms are
cell wall
A student looks at a slice of tissue on an unlabeled microscope slide. The student concludes the tissue is not from an animal because the cells in the tissue have a
gills
In fishes, Phyaryngeal pouches may develop into
B
Look at Figure 25-1 above, which letter represents the hollow nerve cord
vertebral columns
Fewer than 5 percent of all animal species have
stable, internal environment
Homeostasis is a
gather information
Animals have nervous systems that
adapt to new living conditions
When an animals environment changes, sexual reproduction improves a species ability to
excretory system
Ammonia is a waste product that must be eliminated by the
segmented
The presence of legs or other limbs indicates that the animal is
radial symmetry
An animal that has body parts that extend outward from it center show
a hollow ball of cells
A blastula is
A zygote
Which of the following is a fertilized egg?
segmentation involved more than 1 branch
Which of the following statements about the cladogram of animals is true?
heterotrophic
Organisms that must obtain nutrients and energy by eating other organisms are
cell wall
A student looks at a slice of tissue on an unlabeled microscope slide. The student concludes the tissue is not from an animal because the cells in the tissue have a
gills
In chordates in which pharyngeal pouches develop slits that lead outside the body the adult most likely uses what type of organs to breathe
Hollow nerve-cord
Nerves branch in intervals from which of the following structures in a chordate embro
structural support
The notocord is responsible for which function in an embryo?
A tail
Which chordate characteristic is visible on the outside of an adult cat?
nutrients
All animals eat to obtain
skeleton
Muscles work together with a support structure called a
carbon monoxide
Animals have an excretory system that eliminates all wastes except
get rid of salt
To maintain homeostasis, land animals that hunt and feed in salt water
paired organs
Look at the illustration in Figure 25-1. Which of the following internal characteristics would you expect this animal to have?
lined with mesoderms
A coelom is a body cavity
fore limbs
Which of the following variations would you expect to see in land vertebrates?
Deuterostome development
Which of the following is a node that you would expect to find on the cladogram for animals?
Segmentation evolved more than once in different branches of the cladogram
Which of the following statements about the cladogram of animals is true?
TRUE
More than 95% of animals are invertebrates
TRUE
The circulatory system delivers metabolic wastes to the excretory system for processing and elimination
multicellular, which means that they are composed of many cells
Animal bodies are
are not considered a clade because the organisms all lack a particular characteristic instead of sharing one
Invertebrates
cladogram of animals is based on scientists current understanding of the evolutionary history of living species.
The
Animals do not have cell walls, also heterotrophs
What two fundamental characteristics distinguish animals from plants?
1. Multicellular 2. Heterotrophic 3 Eukaryotic 4. Lack Cell walls
What four characteristics are shared by both sponges and humans?
Yes, since it has a backbone, it is a vertebrate. All vertebrates are chordates
A biologist discovers a new species of animal. It does not have a notochord, but it does have a backbone. Can she classify it as a chordate? Explain
Temperature goes up, feed back inhibition causes body to sweat, cools you sin as evaporating, body gets cold, stop sweating, starting to shiver generates heat
Explain how feedback inhibition helps you maintain body temperature
Bilateral, imaginary plane divides the body into 2 equal halves, segmentation, and appendages, cephalization-sense organs
Describe the characteristic of bilateral symmetry in animals. How does this body plan help an animal carry out essential functions
Outermost is the ectoderm which makes skin, nerves, and sense organs, Mesoderm, middle, makes muscle, circulatory, reproductive and excretory system, endoderm, innermost, which makes digestive and respiratory system
How is the arrangement of the three germ layers in an embryo related to the organ systems and tissues in an adult vertebrate?
Different phyla share the same pattern of development, but diff body plans, scientists only considered one, then unrelated animals would be grouped together, Echinoderms- Invertebrates, radial symmetry, no segmentation, no cephalization, chordates, vertebrates, bilateral symmetry have segmentation and cephalization, both deutrosomes
Why should scientists consider both the adult body plan of an animal and its pattern of embryological development when classifying an animal? Use an example to support this
Systems allow animals to survive and reprodce and successfully win its environment, fish with simpler brains couldn’t live on land, while mammals with more complex brains cant live in water
Should the development of a more complex body system in vertebrates be considered an improvement over the simpler body systems of invertebrates? explain
